Sunbreaker here. I have Inferno Whip equipped and have noticed a small issue when using Code of the Siegebreaker. It does not and cannot work on Unstoppable Champions of any kind. They always melle you right back, usually murdering you, and then continue NOT being stopped, even if and when the sound and notification are heard and seen "RadRussian15 staggered a champion!" Definitely makes it harder to use my Phoenix Cradle leggings and be useful for Unstoppable Champions. Hopefully there is a workaround someone has found for the time being.